Explosion engine



Aug! 1942- c. B. mum 2,293,352

EXPLOSION ENGINE Filed Jan. 26, 1940 Ltd/2:4 To? CLBMOZJM /97 roam/5 yPatented Aug. 18, 1942 UNITED STATES PATENT OFFICE 5 Claims.

This invention relates to improvements in explosion engines, andparticularly to the cooling of the cylinders.

While it istrue that important improvements have been developed latelyin explosion engines, no great progress has been made in the cooling ofcylinders, which is still obtained through circulation of water or air.

The improvements subject of the present invention are applicable to anytype of explosion engine, and are based on a physical principle socombined that a real self-refrigeration is obtained without anyadditional consumption of power and in the most simple manner.

The present invention uses the heat of the cylinders in operation toproduce a physical reaction in the gas coming from the carburetor, whichwill result in the necessary cooling to absorb a large amount of theheat caused by the explosions, with the additional advantage ofproviding a recarburation of the fuel that will render the effect moreeffective when burning in the cylinder chamber.

For this purpose, the admission pipe from the avoid overheating of thecylinder. This may be aided, if desired, by other cooling meanscooperating with this automatic cooling.

In order that the invention may be more clearly understood and readilycarried into practice, same has been illustrated by way of example andin a preferred embodiment in the accompanying drawing, wherein thesingle figure is a view of an engine provided with the means forobtaining self -cooling, showing the manner in which vaporization iscaused by the heat received from the cylinder itself.

With reference to the drawing, a indicates the body of the engine whichusually comprises two or more cylinders I with respective pistons 2having connecting rods 3 connected to the pins of crank 4.

The explosion engine has the corresponding carburetor b, the outlet ofwhich is coupled to the admission pipe 0, in the present instancebranched so as to lead to the inlets 5 of the cylinders I.

The inlets 5 are closed by valves 6 through the pressure of a spring Icentered on stem 6', Each As is customary in engines of this type, eachcylinder I has an exhaust pipe for the exhaust of burned gases, and theengine also comprises a corresponding electric ignition system with aspark plug in the chamber of each cylinder.

The present invention takes advantage of the working heat of the pistons2 in order to obtain a self-refrigeration, and for this purpose theadmission pipe, in leading to the inlet 5 of each cylinder I, passesthrough a length of conduit I3 arranged adjacent to the cylinder to befed.

Due to the fact that the conduit I3 has a common wall with the cylinder,the heat generated by the explosions is irradiated directly towards theinterior of said length of conduit I3.

Upon effecting the suction by the stroke of the piston 2, valve 6 opensdue to the control of cam shaft I2 which displaces the slide II of rodI0.

With such suctioning effect, the gasoline or gasoline gas mixed with airin the carburetor passes through the admission pipe 0 and on reachingthe conduit length I3, is vaporized due to the heat irradiated fromcylinder I. This means that the fuel suifers a transformation or changeresulting in the consequent cooling, and logically will absorb thesurrounding heat, thereby cooling the adjacent cylinder I.

For this irradiation effect, the walls separating the cylinder and theconduit I3 are made of good heat conducting metal.

Apart from acting as a refrigerant, the fuel on vaporizing and absorbingthe surrounding heat, acquires a condition which favors combustion, anddue to the fact that it has been transformed into vapor, it is morehighly carburating, as if it had been subject to recarburation.Therefore, on entering the chamber of cylinder I, it will produce a moreeffective action. with the consequent increase in efliciency.

Therefore, the suction of the mixture of fuel and air derived from thecarburetor b, upon passing through the conduit I 3, will produce thecooling of the same cylinder and at the same time cause a recarburationor preparation of the fuel in highly carburating conditions.

If desired, apart from the length of the admission pipe arrangedadjacent to the cylinder I, other water or air cooling means may becombined to cooperate therewith.

The length I3 is parallel to cylinder I, but it of bifurcation, saidadmission conduits having 'a' portion of their length located adjacentto each cylinder, said admission conduits also 'having'a constantcross-section from said point 'of bifurcation to the inlet of eachcylinder so that said portion of the admission conduits located adjacenteach'cylinder is not deformed and follows a straightline substantiallyparallel to the longitudinalaX-is ofeach cylinder.

ZpAnimprOVement'in internal combustion engines as set forth in claim 1wherein the admissionconduithas'a constant cross-section from the pointof bifurcation from the main conduit to the point where it enters thecylinder, whereby in 'maintainingits cross-section, said conduit hascontact by means of a simple length or linear portion of the cylinderWalls.

3. An improvement in internal combustion engines as set forth in claim 1wherein the portion of the admission conduit located adjacent thecylinder is longitudinal thereto, and wherein said conduit, withoutsurrounding the cylinder, only contacts the wall of said cylinder in alinear portion thereof.

4. An improvement in internal combustion engines comprising cylindershaving inlets, pistons reciprocating in said cylinders, a carburetor, amain conduit leading from said carbureter to the inlets in saidcylinders, said main conduit being divided into two branches and saidbranches from the dividing point to the respective inlets having aconstant cross-section, each branch of said main conduit having a linearportion in contact with the walls of a cylinder in such a way thatsaidportion of the branch follows a straight line parallel to thevirtual axis of the cylinder.

5; 'An improvement in internal combustion engines as set forth in claim4 in which said two branches extend longitudinal to the'cylinderat theportion thereof adjacent eachcylinder and each branch has contact withonly one linear length of the wall of the cylinder.

CARLOS BALLESTER MOLINA.

